Alertas de Seguridad de la Información

M Alto vulnerabilidad

Hace 5 días

[CVE-2026-66046] Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic compl…

Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an O(N^2) linear scan of elementType->defaultAtts to determine CDATA status. A remote unauthenticated attacker can supply a single well-formed XML document of a few megabytes …

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

13/08/2026

[CVE-2026-73643] js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 until 5.2.2, parsing a small YAML documen…

js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 until 5.2.2, parsing a small YAML document can take exponential time when an application calls load() or loadAll() on untrusted input. In src/parser/parser.ts, readFlowCollection uses restoreState and calls parseNode a second time when a flow-sequence entry is recognized as a key: value pair. If the key is a nested flow sequence of the sam…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

13/08/2026

[CVE-2026-70453] rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function th…

rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

06/08/2026

[CVE-2026-71488] league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 0.6.0 until 2…

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 0.6.0 until 2.9.0, specially crafted Markdown lines can cause the parser to have quadratic time complexity when converting, because several parsing paths repeatedly rescan growing portions of a line to translate between character positions and byte positions, and the Autolink extension can also copy and validate…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

05/08/2026

[CVE-2026-71321] Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, the…

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, the internal island renderer endpoint `/__nuxt_island/...` decodes and hashes attacker-controlled JSON body input with destr and ohash before validating the URL-resident hash. An unauthenticated `POST /__nuxt_island/_.json` with a large JSON body is fully read, parsed, hashed, and then rejected, which …

nvdaltovulnerabilidad CVSS 7.5 NVD

A Alto vulnerabilidad

27/07/2026

[CVE-2026-55968] Inefficient Algorithmic Complexity, Allocation of Resources Without Limits or Throttling vulnerabili…

Inefficient Algorithmic Complexity, Allocation of Resources Without Limits or Throttling vulnerability in Apache Thrift Node.js bindings. This issue affects Apache Thrift: before 0.24.0. Users are recommended to upgrade to version 0.24.0, which fixes the issue.

nvdaltovulnerabilidad CVSS 7.5 NVD

P Alto vulnerabilidad

14/07/2026

[CVE-2026-59885] pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER, CER, and DER decoders process…

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER, CER, and DER decoders process OBJECT IDENTIFIER and RELATIVE-OID values in quadratic time relative to the number of arcs, so a small crafted payload containing an OID with many arcs consumes excessive CPU per decode() call and can deny service to applications that decode untrusted ASN.1 data. The corresponding encoders have the…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

08/07/2026

[CVE-2026-56669] Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and …

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to 1.4.29, Elysia uses getAll in form data normalization for multipart/form-data endpoints, causing the amount of work to grow quadratically with the number of unique key-value pairs and allowing CPU exhaustion. This issue is fixed in version 1.4.29.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

08/07/2026

[CVE-2026-59925] Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of we…

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in src/mistune/inline_parser.py because the parser scans forward for matching close markers from every potential opening run, allowing denial of service in default Mistune parsing. This issue is fixed…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

08/07/2026

[CVE-2026-59928] Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a Markdown document …

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a Markdown document containing many repeated or distinct reference-link definitions causes quadratic work in src/mistune/block_parser.py and the ref_links environment dictionary handling, allowing denial of service through CPU exhaustion. This issue is fixed in version 3.3.0.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

08/07/2026

[CVE-2026-59922] Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tild…

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tilde, equals-sign, or caret marker pairs around a character causes quadratic work in src/mistune/plugins/formatting.py when the strikethrough, mark, or insert plugin scans for matching markers from each possible start position, allowing denial of service through CPU exhaustion. This issue is fixed in v…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

08/07/2026

[CVE-2026-59887] linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: sch…

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test() and .match() can be invoked at every mailto: occurrence and scan the remaining input through src_email_name in lib/re.mjs, causing O(n^2) CPU consumption on crafted user text. This issue is fixed in version 5.0.2.

nvdaltovulnerabilidad CVSS 7.5 NVD

I Alto vulnerabilidad

08/07/2026

[CVE-2026-59880] Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, Immutable…

Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, Immutable.Map and Immutable.Set keep keys that share the same 32-bit hash in a HashCollisionNode collision bucket that is scanned linearly, allowing an attacker who controls keys inserted into a Map, such as through Immutable.Map(obj), Immutable.fromJS(obj), state.merge(userObject), or mergeDeep, to craft ma…

nvdaltovulnerabilidad CVSS 7.5 NVD

N Alto vulnerabilidad

08/07/2026

[CVE-2026-59869] js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0…

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in versions 3.15.0 and 4.3.0.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

02/07/2026

[CVE-2026-59094] Pathway through 0.31.1, fixed in commit d09722e, document store applies a caller-supplied glob patte…

Pathway through 0.31.1, fixed in commit d09722e, document store applies a caller-supplied glob pattern to indexed document paths using a hand-written recursive matcher that branches two ways on each ** token without memoization, giving exponential worst-case complexity. The filepath_globpattern value is taken from the body of the unauthenticated HTTP endpoints /v1/retrieve, /v1/inputs and /v2/answ…

nvdaltovulnerabilidad CVSS 7.5 NVD

J Alto vulnerabilidad

30/06/2026

[CVE-2026-53433] fzf is vulnerable to a Denial of Service (DoS) due to inefficient HTTP body processing in the --list…

fzf is vulnerable to a Denial of Service (DoS) due to inefficient HTTP body processing in the --listen mode due to inefficient HTTP body processing using repeated string concatenation, resulting in quadratic time complexity (O(n²)). A crafted POST request with many small segments can trigger excessive CPU usage during request handling.This allows a single malicious request to monopolize the single…

nvdaltovulnerabilidad CVSS 7.5 NVD

S Alto vulnerabilidad

25/06/2026

[CVE-2026-13311] shell-quote prior to 1.8.5 finalizes parsed tokens in parse() using Array.prototype.concat as a redu…

shell-quote prior to 1.8.5 finalizes parsed tokens in parse() using Array.prototype.concat as a reduce accumulator, which reallocates and copies the entire growing array on every iteration. As a result parse() runs in O(n^2) time relative to the number of input tokens. An attacker who can supply an attacker-controlled string to any code path that calls parse() (no shell metacharacters are required…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

24/06/2026

[CVE-2026-49851] Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerabl…

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear (approximately O(n²)) behavior in parse_link_text. When parsing Markdown containing many consecutive [ characters, parse_link_text repeatedly scans the input using a regex search inside a loop. Each iteration re-scans a large portion of the remaining stri…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

22/06/2026

[CVE-2026-48516] MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, InterfaceLookupFo…

MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, InterfaceLookupFormatter constructs an internal Dictionary with the default equality comparer instead of the security-aware comparer supplied by options.Security.GetEqualityComparer(). This formatter omission allows hash-collision CPU denial of service against ILo…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

22/06/2026

[CVE-2026-48502] MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader…

MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader.ReadDateTime() can allocate stack memory based on an attacker-controlled MessagePack extension length. In the slow path for timestamp extension parsing, the computed tokenSize includes the extension body length from the wire and is used in a stackalloc operation before the extension length is valid…

nvdaltovulnerabilidad CVSS 7.5 NVD